Overall look of the website- Looks like a basic template, but it works. Probably could do with some images to break it up.
Background Color n Texture- quite pale colours. I'd try for something more 'premium' personally an use some white space - a bit like this forum.
Post Font- seems strange with breaks too large between lines. Once again, I'd use something like this forum for easier reading.
Post Background- meh
Logo Image - not very interesting. Maybe someone talking instead?
Logo Font- see post font comment
Categories- ok... but is there any point to 'uncategorized'?
Menu- simple, functional, it works
Any new sections that I can add? - Memes section. Some of the best modern quotes are on sites like 9gag
And improvements that I can add to the design and color of the website? - Nothing really 'pops'. I'd look at more striking/simple websites that you visit regularly and take inspiration from there. I feel that white space and basic colours are needed for a cleaner, crisper look.
Hope all that helps?